High-stability operation axial flow pump based on multiple bearings

Abstract

The utility model discloses a high-stability operation axial flow pump based on multiple bearings. The high-stability operation axial flow pump comprises a pump shell, a connecting pipe, a water inlet pipe, a water inlet horn, a rotating shaft, an impeller, a water guide cone, blades, a fixed guide vane and a motor. An upper containing part, a lower containing part and a plurality of abutting units are installed in the connecting pipe, the upper containing part is provided with an upper containing groove, an upper bearing is placed in the upper containing groove, the lower containing part is provided with a lower containing groove, and a lower bearing is placed in the lower containing groove. According to the axial flow pump, the two bearings are arranged at the connecting pipe to support and limit the rotating shaft, so that vibration and shaking of the rotating shaft during high-speed rotation are reduced, and the pump body operates more stably. The upper bearing and the lower bearing are convenient to install, the stability and reliability of the bearings after installation can be ensured through the abutting unit, and the bearings are convenient to replace and maintain.

Description

Technical Field

[0001] The utility model relates to the field of axial flow pumps, and more specifically to a high-stability operating axial flow pump based on multiple bearings. Background Art

[0002] Axial flow pumps have been widely used in the current industrial era, meeting people's needs in industrial production, daily life and other aspects. For example, axial flow pumps have played an important role in large-scale water conservancy projects and industrial circulating water systems. In addition, axial flow pumps have also been widely used in water use in agricultural irrigation and drainage, animal husbandry and other water use.

[0003] For ordinary axial flow pumps, if only one bearing is used to support the entire shaft, the bearing will bear a relatively large load. Especially for occasions that require long-term and continuous operation, such as large-scale water conservancy projects, industrial circulating water systems, agricultural irrigation systems, etc., in these occasions, the axial flow pump needs to withstand various complex working environments and workloads. During long-term operation, this concentrated load will cause accelerated bearing wear, thereby reducing the overall performance and service life of the axial flow pump, making it unable to meet the use requirements and increasing maintenance costs. In addition, the bearings of ordinary axial flow pumps are inconvenient to disassemble, and when the bearings need to be maintained or replaced, it will increase the difficulty and time of maintenance. Utility Model Content

[0004] The utility model aims to overcome the defects of the prior art and provide a multi-bearing based axial flow pump with high stable operation.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an axial flow pump, comprising a pump casing, a connecting pipe connected to the pump casing, a water inlet pipe connected to the connecting pipe, a water inlet horn connected to the water inlet pipe, a rotating shaft extending into the pump casing, the connecting pipe and the water inlet pipe, an impeller mounted on the rotating shaft, a water guide cone mounted on the rotating shaft, blades mounted on the impeller, fixed guide vanes mounted on the connecting pipe and a motor for driving the rotating shaft; an upper placement portion, a lower placement portion and a plurality of tightening units are installed in the connecting pipe, the upper placement portion is connected to the connecting pipe through a connecting rod, the upper placement portion has an upper through hole passed by the rotating shaft, the upper placement portion has an upper placement groove, an upper bearing matching the rotating shaft is placed in the upper placement groove, and the upper bearing includes an upper metal The outer ring and the upper rubber sleeve, the lower placement part is connected to the connecting pipe through the fixed guide vane, the lower placement part has a lower through hole passed by the rotating shaft, the lower placement part has a lower placement groove, the lower placement groove is provided with a lower bearing matching the rotating shaft, the lower bearing includes a lower metal outer ring and a lower rubber sleeve, the upper metal outer ring has a plurality of upper arc grooves, the lower metal outer ring has a plurality of lower arc grooves, the clamping unit includes an upper arc clamping plate matching the upper arc groove, a lower arc clamping plate matching the lower arc groove, a surrounding sleeve connected to the upper arc clamping plate, a rotating rod inserted into the surrounding sleeve, a threaded sleeve connected to the lower arc clamping plate, and a first rotating block and a second rotating block installed on the rotating rod, and the bottom end of the rotating rod has an external thread matching the threaded sleeve.

[0006] Furthermore, the cross-sections of the first rotating block and the second rotating block are both regular hexagonal, and the second rotating block has a plurality of through holes with regular hexagonal cross-sections.

[0007] Thereby, it is convenient to use different tools to rotate the rotating rod.

[0008] Furthermore, a plurality of limiting rods are connected to the upper arc-shaped abutting plate, and a limiting sleeve cooperating with the limiting rods is connected to the lower arc-shaped abutting plate.

[0009] Thereby, the lower arc-shaped abutment plate is more stable when moving.

[0010] Furthermore, the plurality of abutting units are distributed in a ring shape with equal intervals.

[0011] This ensures that the upper and lower bearings are evenly supported and fixed in all directions.

[0012] Furthermore, there are three upper arc-shaped grooves, three lower arc-shaped grooves and three abutting units.

[0013] Furthermore, the pump casing has a first flange, the connecting pipe has a second flange and a third flange, the water inlet pipe has a fourth flange, the first flange is fixedly connected to the second flange, and the third flange is fixedly connected to the fourth flange.

[0014] This makes it easier to install and fix the pump casing, the connecting pipe, and the water inlet pipe.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The axial flow pump of the present application has two bearings at the connecting pipe to support and limit the rotating shaft, thereby reducing the vibration and shaking of the rotating shaft when rotating at high speed, making the operation of the pump body more stable.

[0017] 2. The upper bearing and the lower bearing of the axial flow pump of the present application are easy to install. The stability and reliability of the bearings after installation can be ensured by the tightening unit. The bearings are easy to replace and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of an axial flow pump;

[0019] Figure 2 This is a first-person perspective diagram when the pressing unit is not installed;

[0020] Figure 3 This is a schematic diagram of a second viewing angle when the pressing unit is not installed;

[0021] Figure 4 This is a first-person perspective diagram when the upper and lower bearings are not installed;

[0022] Figure 5 This is a schematic diagram from the second viewing angle when the upper and lower bearings are not installed;

[0023] Figure 6 It is a schematic diagram of the separation of the pressing unit components;

[0024] To make it clear, Figures 2 to 4 The connecting tube is cut in half and Figure 4 , Figure 5 The abutment unit is hidden.

[0025] Explanation of the reference numerals: 1 pump casing; 2 connecting pipe; 2.1 fixed guide vane; 3 water inlet pipe; 3.1 water inlet horn; 4 rotating shaft; 4.1 impeller; 4.2 blades; 4.3 water guide cone; 5 upper placement portion; 5.1 connecting rod; 6 upper bearing; 6.1 upper metal outer ring; 6.2 upper rubber sleeve; 6.3 upper arc groove; 7 lower placement portion; 8 lower bearing; 8.1 lower metal outer ring; 8.2 lower rubber sleeve; 8.3 lower arc groove; 9.1 upper arc-shaped clamping plate; 9.2 lower arc-shaped clamping plate; 9.3 surrounding sleeve; 9.4 rotating rod; 9.4.1 first rotating block; 9.4.2 second rotating block; 9.4.3 through hole; 9.5 threaded sleeve; 9.6 limiting rod; 9.7 limiting sleeve. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The utility model provides Figure 1-6 The illustrated embodiment of a multi-bearing based high stability axial flow pump comprises a pump casing 1, a connecting pipe 2 connected to the pump casing 1, a water inlet pipe 3 connected to the connecting pipe 2, a water inlet horn 3.1 connected to the water inlet pipe 3, a rotating shaft 4 extending into the pump casing 1, the connecting pipe 2 and the water inlet pipe 3, an impeller 4.1 mounted on the rotating shaft 4, a water guide cone 4.3 mounted on the rotating shaft 4, blades 4.2 mounted on the impeller 4.1, a fixed guide vane 2.1 mounted at the connecting pipe 2 and a motor for driving the rotating shaft 4; an upper placement portion 5, a lower placement portion 7 and a plurality of tightening units are installed in the connecting pipe 2, the upper placement portion 5 is connected to the connecting pipe 2 through a connecting rod 5.1, the upper placement portion 5 has an upper through hole passed by the rotating shaft 4, the upper placement portion 5 has an upper placement groove, an upper bearing 6 matching the rotating shaft 4 is placed in the upper placement groove, the upper bearing 6 comprises an upper metal outer ring 6.1 and an upper rubber sleeve 6.2, the lower placement portion 7 is The fixed guide vane 2.1 is connected to the connecting pipe 2, the lower placement part 7 has a lower through hole passed by the rotating shaft 4, the lower placement part 7 has a lower placement groove, the lower placement groove is provided with a lower bearing 8 that cooperates with the rotating shaft 4, the lower bearing 8 includes a lower metal outer ring 8.1 and a lower rubber sleeve 8.2, the upper metal outer ring 6.1 has a plurality of upper arc grooves 6.3, the lower metal outer ring 8.1 has a plurality of lower arc grooves 8.3, the tightening unit includes an upper arc tightening plate 9.1 that cooperates with the upper arc groove 6.3, a lower arc tightening plate 9.2 that cooperates with the lower arc groove 8.3, a surrounding sleeve 9.3 connected to the upper arc tightening plate 9.1, a rotating rod 9.4 inserted into the surrounding sleeve 9.3, a threaded sleeve 9.5 connected to the lower arc tightening plate 9.2, and a first rotating block 9.4.1 and a second rotating block 9.4.2 installed on the rotating rod 9.4, and the bottom end of the rotating rod 9.4 has an external thread that cooperates with the threaded sleeve 9.5.

[0028] The cross-sections of the first rotating block 9.4.1 and the second rotating block 9.4.2 are both regular hexagonal, and the second rotating block 9.4.2 has multiple through holes 9.4.3 with regular hexagonal cross-sections; the upper arc-shaped clamping plate 9.1 is connected to multiple limit rods 9.6, and the lower arc-shaped clamping plate 9.2 is connected to a limit sleeve 9.7 that cooperates with the limit rods 9.6; multiple clamping units are distributed in a ring shape with equal intervals; the upper arc-shaped groove 6.3, the lower arc-shaped groove 8.3 and the clamping unit are each three; the pump housing 1 has a first flange, the connecting pipe 2 has a second flange and a third flange, the water inlet pipe 3 has a fourth flange, the first flange is fixedly connected to the second flange, and the third flange is fixedly connected to the fourth flange.

[0029] Working principle: The axial flow pump of the present application has two bearings at the connecting pipe to support and limit the rotating shaft, thereby reducing the vibration and shaking of the rotating shaft when rotating at high speed, making the pump body run more stably, reducing the noise and wear caused by vibration and shaking, and extending the service life of the pump. The upper and lower bearings are easy to install, and the stability and reliability of the bearings after installation can be ensured by the tightening unit, and the bearings are easy to replace and maintain.

[0030] During the specific installation, first place the upper bearing in the upper placement groove, place the lower bearing in the lower placement groove, then install the clamping unit, place the upper arc clamping plate in the upper arc groove, and then insert the rotating rod into the surrounding sleeve, and then use a suitable tool to rotate the rotating rod, thereby driving the lower arc clamping plate to move into the lower arc groove, and then continue to rotate the rotating rod to adjust the degree of compression of the upper arc clamping plate and the lower arc clamping plate on the bearing, thereby ensuring the stability and reliability of the bearing.

[0031] Although the present invention has been illustrated and described with respect to preferred embodiments, those skilled in the art will appreciate that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. A high-stability axial flow pump based on multiple bearings, characterized in that: The pump comprises a pump casing, a connecting pipe connected to the pump casing, a water inlet pipe connected to the connecting pipe, a water inlet horn connected to the water inlet pipe, a rotating shaft extending into the pump casing, the connecting pipe and the water inlet pipe, an impeller mounted on the rotating shaft, a water guide cone mounted on the rotating shaft, blades mounted on the impeller, fixed guide vanes mounted on the connecting pipe, and a motor for driving the rotating shaft; an upper placement portion, a lower placement portion and a plurality of tightening units are installed in the connecting pipe, the upper placement portion is connected to the connecting pipe through a connecting rod, the upper placement portion has an upper through hole passed by the rotating shaft, the upper placement portion has an upper placement groove, an upper bearing matching the rotating shaft is placed in the upper placement groove, the upper bearing comprises an upper metal outer ring and an upper rubber sleeve, the lower placement portion The fixing guide vane is connected to the connecting pipe, the lower placing part has a lower through hole passed by the rotating shaft, the lower placing part has a lower placing groove, the lower placing groove has a lower bearing that cooperates with the rotating shaft, the lower bearing includes a lower metal outer ring and a lower rubber sleeve, the upper metal outer ring has a plurality of upper arc grooves, the lower metal outer ring has a plurality of lower arc grooves, the clamping unit includes an upper arc clamping plate that cooperates with the upper arc groove, a lower arc clamping plate that cooperates with the lower arc groove, a surrounding sleeve connected to the upper arc clamping plate, a rotating rod inserted into the surrounding sleeve, a threaded sleeve connected to the lower arc clamping plate, and a first rotating block and a second rotating block installed on the rotating rod, and the bottom end of the rotating rod has an external thread that cooperates with the threaded sleeve.

2. The high stable operation axial flow pump based on multiple bearings according to claim 1 is characterized in that: The cross-sections of the first rotating block and the second rotating block are both regular hexagonal, and the second rotating block has a plurality of through holes with regular hexagonal cross-sections.

3. The high stable operation axial flow pump based on multiple bearings according to claim 1 is characterized in that: The upper arc-shaped abutting plate is connected to a plurality of limiting rods, and the lower arc-shaped abutting plate is connected to a limiting sleeve matched with the limiting rods.

4. The high stable operation axial flow pump based on multiple bearings according to claim 1 is characterized in that: The plurality of abutment units are distributed in a ring shape with equal intervals.

5. The high stable operation axial flow pump based on multiple bearings according to claim 1 is characterized in that: There are three upper arc grooves, three lower arc grooves and three pressing units.

6. The high stable operation axial flow pump based on multiple bearings according to claim 1 is characterized in that: The pump housing has a first flange, the connecting pipe has a second flange and a third flange, the water inlet pipe has a fourth flange, the first flange is fixedly connected to the second flange, and the third flange is fixedly connected to the fourth flange.

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